package com.fan.shop.views.bean;

import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.RequestScoped;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.ser.FilterProvider;
import org.codehaus.jackson.map.ser.impl.SimpleBeanPropertyFilter;
import org.codehaus.jackson.map.ser.impl.SimpleFilterProvider;

import com.fan.shop.global.JacksonMapper;
import com.fan.shop.services.StockReqLineService;
import com.fan.shop.services.StockReqService;

@ManagedBean(name = "stockReqLinesBean")
@RequestScoped
public class StockReqLinesBean extends ShopBean {

	private static Logger logger = Logger.getLogger(ItemsBean.class);

	@ManagedProperty(value = "#{stockReqLineService}")
	private StockReqLineService stockReqLineService;

	@ManagedProperty(value = "#{stockReqService}")
	private StockReqService stockReqService;

	private String requisitionNo;
	private String tableData;
	private int columnsSize;
	private List<String> columnNames;

	

	public StockReqLinesBean() {
		
		super();
		
		HttpServletRequest httpServletRequest = (HttpServletRequest)         
				FacesContext.getCurrentInstance().getExternalContext().getRequest();
	    requisitionNo = httpServletRequest.getParameter("requisition_no");
	    
	    System.out.println(requisitionNo);
	    
	}

	public static Logger getLogger() {
		return logger;
	}

	public static void setLogger(Logger logger) {
		StockReqLinesBean.logger = logger;
	}

	public StockReqLineService getStockReqLineService() {
		return stockReqLineService;
	}

	public void setStockReqLineService(StockReqLineService stockReqLineService) {
		this.stockReqLineService = stockReqLineService;
	}
	public String getRequisitionNo() {
		return requisitionNo;
	}

	public void setRequisitionNo(String requisitionNo) {
		this.requisitionNo = requisitionNo;
	}

	public String getTableData() {
		ObjectMapper mapper = JacksonMapper.getInstance();

		Set<String> columnNames = new HashSet<String>();
		for (String name : stockReqLineService.getColumnNames()) {
			columnNames.add(name);

		}
		FilterProvider filters = new SimpleFilterProvider().addFilter(
				"myFilter",
				SimpleBeanPropertyFilter.filterOutAllExcept(columnNames));

		tableData = "\"aaData\": [";
		StringBuffer data = new StringBuffer();

		for (Object obj : stockReqService.getStockReqLines(requisitionNo)) {
			try {
				Object stockReqLineUserClass = stockReqLineService.copy(obj);
				String line = mapper.writer(filters).writeValueAsString(
						stockReqLineUserClass);
				data = data.append(line);

			} catch (JsonGenerationException e) {
				e.printStackTrace();
			} catch (JsonMappingException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		String tmp = data.toString().replaceAll("\\{[^,:\\{\\}]*:", "[");
		tmp = tmp.replaceAll(",[^,:\\{\\}]*:", ",");

		tableData = tableData + tmp.replace("{", "[").replace("}", "],");
		if (tableData.endsWith(",")) {
			tableData = tableData.substring(0, tableData.length() - 1);
		}

		tableData = tableData + "]";

		return tableData;
	}

	public void setTableData(String tableData) {
		this.tableData = tableData;
	}

	public int getColumnsSize() {
		columnsSize = getColumnNames().size();
		return columnsSize;
	}

	public void setColumnsSize(int columnsSize) {
		this.columnsSize = columnsSize;
	}

	public List<String> getColumnNames() {
		columnNames = stockReqLineService.getColumnNames();
		return columnNames;
	}

	public void setColumnNames(List<String> columnNames) {
		this.columnNames = columnNames;
	}

	public StockReqService getStockReqService() {
		return stockReqService;
	}

	public void setStockReqService(StockReqService stockReqService) {
		this.stockReqService = stockReqService;
	}

	

}
